The type that you have actually removes moisture. This type does require periodic maintenance, but it really does control the humidity.

The second type is heat. Some guys use lights, or you're probably familiar with the electric dry rods. These do not remove moisture, but increase the air temperature within the safe. This raises the dew point. The nice thing about these is that you don't have to maintain them. You plug them in and that's it.

When it's all said and done, you may even need a combination of the two methods. The only way you'll know is to buy a hygrometer and determine what your moisture levels really are.

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